50121240 has 192 divisors, whose sum is σ = 172821600. Its totient is φ = 11556864.

The previous prime is 50121233. The next prime is 50121241. The reversal of 50121240 is 4212105.

50121240 = 706² + 707² + ... + 794².

50121240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50121241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 563116 + ... + 563204.

Almost surely, 2^50121240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50121240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86410800).

50121240 is an abundant number, since it is smaller than the sum of its proper divisors (122700360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

50121240 is a wasteful number, since it uses less digits than its factorization.

50121240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154 (or 131 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 50121240 is about 7079.6355838419. The cubic root of 50121240 is about 368.7006774977.

Adding to 50121240 its reverse (4212105), we get a palindrome (54333345).

The spelling of 50121240 in words is "fifty million, one hundred twenty-one thousand, two hundred forty".